Hi Jakob,
I assume you are running mlcp and ML server on the same machine. Ideally, 
client and server should be on different machines. Is any resource maxed out 
during the export?
If that’s the case or suspicion, you can try -thread_count 1. Then mlcp will be 
less aggressive when doing the export.

Aries

From: [email protected] 
[mailto:[email protected]] On Behalf Of Jakob Fix
Sent: Wednesday, July 23, 2014 1:56 PM
To: MarkLogic Developer Discussion
Subject: Re: [MarkLogic Dev General] mlcp export problem/question

Hi Aries,

as suggested I increased the timeout to 30.  the process still doesn't finish, 
I get until 19% (see https://gist.github.com/jfix/6bb7fe80cab7e3ef78e6), but 
before and after there are similar and different errors.  in addition to the 
"server connection lost?" suspicion, MarkLogic now offers a new error on line 
124 (and later) "java.lang.RuntimeException: Could not buffer value as string"

of course, I could probably further increase the keepalive timeout, but that 
seems like a band aid. so, unfortunately, I'm not much further ahead and it's 
slightly frustrating because on paper mlcp is supposed to replace xqsync, but 
it's hard to get it to do basic stuff (because I suppose exporting a database 
is quite a standard task).

I welcome any help to get this done.

cheers,
Jakob.

On Wed, Jul 23, 2014 at 1:18 AM, Aries Li 
<[email protected]<mailto:[email protected]>> wrote:
Maybe the server is too busy to response in time. I would try raise the 
keepalive timeout from 5 to 30 on the xdbc server. Please let us know if that 
helps.

Aries
From: 
[email protected]<mailto:[email protected]>
 
[mailto:[email protected]<mailto:[email protected]>]
 On Behalf Of Jakob Fix
Sent: Tuesday, July 22, 2014 4:02 PM
To: General Mark Logic Developer Discussion
Subject: [MarkLogic Dev General] mlcp export problem/question

Hi,

I'm trying to export a database using mlcp. I'm not having much success.

Here is a gist of the error output after 1009 seconds running (that's what mlcp 
says):

https://gist.github.com/jfix/2ef60350f8af9a4c2f33

mlcp wonders whether "Server connection lost?" but it's running as far as I can 
make out. Are there any special precautions to take when exporting (i.e. 
disabling potentially running tasks on the Taskserver, ...)?

the database is about 3 GB big (according to the Size indication in the status 
page: 3,045 MB).

I'm running this on a Macbook Pro with 8Gb of RAM, latest MarkLogic (7.0-3) and 
latest mlcp (Hadoop2-1.2-2).

cheers,
Jakob.

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